I haven't re-checked every rocket kit listing on the Quest website, but at least for the relatively few I looked at, I didn't see the recommended Q-Jet motors listed (I suppose they could be gradually updating their website's kit listings to include them, or be about to do so soon). It's no big deal for us to figure out which Q-Jet motors are proper matches for which kits, but including that information on their website (and in the kits themselves, of course--addendum stickers could be affixed to already-produced kits). Also:

I'm glad to see that not only do the kit listings on their website include the compatible Estes motors for each kit (they've been doing this for a while), but that they also list comparable Estes model rocket kits (here is just one example of these listings [for their Quick-Q kit, in this case]: http://www.questaerospace.com/Quick...5_16428946.aspx ).